Rabbitmq vhost and user support

[lmiccini]

Add support for a dedicated rabbitmq cluster for notifications.

Add new messagingBus and notificationsBus interfaces to hold cluster,
user and vhost names for optional usage.
The controller adds these values to the TransportURL create request when present.

Additionally, we migrate RabbitMQ cluster name to RabbitMq config struct
using DefaultRabbitMqConfig from infra-operator to automatically
populate the new Cluster field from legacy RabbitMqClusterName.

Example usage:

  spec:
    messagingBus:
      cluster: rpc-rabbitmq
      user: rpc-user
      vhost: rpc-vhost
    notificationsBus:
      cluster: notifications-rabbitmq
      user: notifications-user
      vhost: notifications-vhost

Jira: https://issues.redhat.com/browse/OSPRH-22695

[openshift-ci]

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[softwarefactory-project-zuul]

Build failed (check pipeline). Post recheck (without leading slash)
to rerun all jobs. Make sure the failure cause has been resolved before
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https://softwarefactory-project.io/zuul/t/rdoproject.org/buildset/178551e24f714904ade13446c82e533b

❌ openstack-k8s-operators-content-provider FAILURE in 6m 55s
⚠️ heat-operator-tempest-multinode SKIPPED Skipped due to failed job openstack-k8s-operators-content-provider

[softwarefactory-project-zuul]

Build failed (check pipeline). Post recheck (without leading slash)
to rerun all jobs. Make sure the failure cause has been resolved before
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https://softwarefactory-project.io/zuul/t/rdoproject.org/buildset/ac9a3a4174934792a479059b7bfea3d5

✔️ openstack-k8s-operators-content-provider SUCCESS in 51m 11s
❌ heat-operator-tempest-multinode FAILURE in 30m 21s

[lmiccini]

/test heat-operator-build-deploy-kuttl

[softwarefactory-project-zuul]

Merge Failed.

This change or one of its cross-repo dependencies was unable to be automatically merged with the current state of its repository. Please rebase the change and upload a new patchset.
Warning:
Error merging github.com/openstack-k8s-operators/heat-operator for 604,2208b1f43dd625cc68e261413e225afbfdbe3607

[openshift-ci]

@lmiccini: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
ci/prow/precommit-check	cf76e5c	link	true	/test precommit-check

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[softwarefactory-project-zuul]

Build failed (check pipeline). Post recheck (without leading slash)
to rerun all jobs. Make sure the failure cause has been resolved before
you rerun jobs.

https://softwarefactory-project.io/zuul/t/rdoproject.org/buildset/0ba6ba123a414a098adcd93582bf7edb

✔️ openstack-k8s-operators-content-provider SUCCESS in 1h 40m 18s
❌ heat-operator-tempest-multinode FAILURE in 1h 21m 51s

[lmiccini]

recheck